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Cable Tray for Telecommunications Part 1

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Cable Tray for Telecommunications Part 1 SECTION 270528 — CABLE TRAY FOR TELECOMMUNICATIONS PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to the work of this Section. 1.2 SUMMARY A. Provide all materials and labor for the installation of a cable tray system for communications infrastructure. This section includes requirements for providing a cable tray system for communications circuits. These requirements are in addition to any that may exist in Section 27 – “Cable Tray.” B. Related Sections 1. Division 7 Section — "Firestopping" 2. Division 10 Section — "Cutting and Patching" 3. Division 27 Section — "Basic Electrical Materials and Methods" 4. Division 27 Section — "Raceway and Boxes for Communications Circuits" 5. Division 27 Section — "Inside Plant Communications Circuits" 6. Division 27 Section — "Outside Plant Communications Circuits" 7. Division 27 Section – “Telecommunications Room Requirements” 8. Division 27 Section – “Backbone Cabling Requirements” 9. Division 27 Section – “Horizontal Cabling Requirements” 1.3 REFERENCES A. The applicable portions of the following specifications, standards, codes and regulations shall be incorporated by reference into these specifications. 1. General: a. National Electrical Code (NEC) b. National Electrical Safety Code (NESC) c. Washington Industrial Safety and Health Act (WISHA) d. Occupational Safety and Health Act (OSHA) e. ASTM A123 – Specification for Zinc (Hot Galvanized) Coatings on Products Fabricated from Rolled, Pressed, and Forged Steel Shapes, Plates, Bars, and Strip. f. ASTM A653 – Specification for Steel Sheet, Zinc-Coated (Galvanized) by the Hot Dip Process, Structural (Physical) Quality. g. ASTM A1011 – Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High- Strength Low Alloy and High-Strength Low-Alloy with Improved Formability. h. ASTM A1008 – Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low Alloy and High-Strength Low-Alloy with Improved Formability. i. ASTM B633 – Specification for Electrodeposited Coatings of Zinc on Iron and Steel j. NEMA VE 1 – Metallic Cable Tray Systems k. NEMA VE 2 – Cable Tray Installation Guidelines 2. Communications: a. TIA/EIA - 568: Commercial Building Telecommunications Cabling Standard b. TIA/EIA - 569: Commercial Building Standard for Telecommunication Pathways and Spaces c. TIA/EIA - 606: The Administration Standard for the Telecommunications Infrastructure of Commercial Buildings d. TIA/EIA - 607: Commercial Building Grounding and Bonding Requirements for Telecommunications e. ISO/IEC IS 11801: Generic Cabling for Customer Premises f. BICSI: BICSI Telecommunications Cabling Installation Manual g. BICSI: BICSI Telecommunications Distribution Methods Manual (TDMM) 1.4 DEFINITIONS A. “EMT shall mean Electrical Metallic Tubing. B. “RMC” shall mean Rigid Metal Conduit. C. “Raceway” shall mean any enclosed channel for routing wire, cable or busbars. D. “TMGB” shall mean Telecommunications Main Grounding Busbar. There is typically one TMGB per building, located in the main telecommunications room. This busbar is directly bonded to the electrical service ground. E. “TGB” shall mean Telecommunications Grounding Busbar. There is typically one TGB per telecommunications room. The TGB is connected both to the TMGB and to building structural steel or other permanent metallic systems. F. “TBB” shall mean Telecommunications Bonding Backbone. The TBB is a conductor used to connect TMGBs to the TGBs. G. “Pullbox” shall mean a metallic box with a removable cover, used to facilitate pulling cable through conduit runs longer than 100’ or in which there are more than 180 degrees of bends. Pullboxes shall have no more than one conduit entering and one conduit exiting the box. H. “Junction box” shall mean a pullbox wherein a conduit run transitions from a feeder conduit to multiple distribution conduits. 1.5 SYSTEM DESCRIPTION A. Furnish, install, and place into satisfactory and successful operation all materials, devices, and necessary appurtenances to provide a complete, permanent Cable Tray infrastructure for communications circuits as hereinafter specified and/or shown on the Contract Documents. The Cable Tray system shall support an ANSI/TIA/EIA and lSO/IEC compliant communications Structured Cabling System (SCS) as specified in Inside Plant Communications Circuits. B. The work shall include materials, equipment and apparatus not specifically mentioned herein or noted on the plans but which are necessary to make a complete working ANSI/TIA/EIA and ISO/IEC compliant Cable Tray system. 1.6 SUBMITTAL INFORMATION A. Product Data Submittals: Provide submittal information for review before materials are delivered to the job site. Provide product data submittals for all products at the same time. 1. Submit a letter stating that the materials will be provided as specified, and specifically listing any items that will not be provided as specified. The letter shall also state that the Contractor has reviewed the specified items and agrees that they are applicable to this project in all respects. 2. For those items noted as allowing “or equal,” and which are not being provided as specifically named, submit standard manufacturer's cut sheets or other descriptive information, along with a written description detailing the reason for the substitution. 3. Provide standard manufacturer’s cut sheets and the operating and maintenance (O&M) instructions at the time of submittal review for each device in the system, regardless of whether it is submitted as specified or as an approved equal. These instructions shall detail how to install and service the equipment and shall include information necessary for rough-in and preparation of the building facilities to receive the materials. B. Closeout Submittals: Provide submittal information for review as follows: 1. O&M Manual for Communications - At the completion of the project, submit O&M information from product data submittals (above), updated to reflect any changes during the course of construction, to the Designer in the telecommunications-specific O&M Manual for Communications binder labeled with the project name and description. 2. Records - Maintain at the job site a minimum of one set of Record Drawings, Specification, and Addenda. Record Drawings shall consist of redline markups of drawings, specifications and spreadsheets. a. Document changes to the system from that originally shown on the Contract Documents and clearly identify system component labels and identifiers on Record Drawings. b. Keep Record Drawings at the job site and make available to the Owner and Designer at any time. c. Keep Record Drawings current throughout the course of construction. (“Current” is defined as not more than one week behind actual construction). d. Show identifiers for major infrastructure components on Record Drawings. 1.7 SEQUENCING 1.8 CONTRACTOR WARRANTY: A. Provide a Contractor-endorsed two-year service warranty against defects in materials and workmanship. 1. Provide labor attributable to the fulfillment of this warranty at no cost to the Owner. 2. The Contractor Warranty period shall commence upon Owner acceptance of the work. PART 2 - PRODUCTS 2.1 GENERAL A. Materials shall consist of tray sections, tray fittings, connectors, supports, expansion joints, blind end plates, barrier strips, radius drops, bonding conductors and other incidentals and accessories as required. Provide all incidental and/or miscellaneous hardware not explicitly specified or shown on the Contract Documents that is required for a fully operational and warranted system. B. Unless specifically stated as “Or equal”, equivalent items are not acceptable. Provide items as specified. C. Physically verify existing site conditions prior to purchase and delivery of the materials. D. Cable tray components shall be manufactured by a single manufacturer. Components shall not be intermixed between different manufacturers. 1. The cable tray manufacturer shall be one of the following: a. GS Metals b. Cablofil 2. Substitution is not acceptable unless the cable tray manufacturer has been pre-approved prior to bidding. Contractors, in order to obtain approval for cable tray manufacturer substitution, shall submit their request for substitution to the Engineer at least two weeks prior to the bid date. Approval or denial of a substitution request will be based upon the sole judgment of the Engineer. E. For a given manufacturer, all components shall be part of a single cable tray product line – components shall not be intermixed between a manufacturer’s cable tray product lines. 1. The cable tray product one shall be one of the following: a. For GS Metals: Flextray Series b. For Cablofil, Inc.: EZ Tray CF54/xxx Series 2.2 MATERIALS AND FINISH A. General: Except as otherwise indicated, provide metal cable runways of types, classes and sizes indicated with splice connectors, bolts, nuts and washers for connecting units. B. Welded Wire (Basket Tray): Cable tray shall be constructed of welded wire mesh (high strength steel wires) with a continuous safety edge wire lip. Cable tray shall be complete will all tray supports, materials, and incidental and miscellaneous hardware required for a complete cable tray system. 1. Finish: Carbon steel with electro-plated zinc galvanized finish. 2. Width: Widths shall be as shown on the Contract Documents. Where cable tray width is not shown on the Contract Documents, it shall
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